<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>v-model</title>
    <style>
        .box{
            width: 200px;
            height: 200px;
            border: 3px solid #000;
            font-size: 30px;
            margin-top: 10px;
        }
        
    </style>
</head>

<body>
    <div id="app">
    <div class="box" :style="{width:'400px',height:'400px'}">我叫阿良，善良的良。</div>
    </div>

    <!-- 引入包-->
    <script src="https://cdn.jsdelivr.net/npm/vue@2.7.14/dist/vue.js"></script>
    <script>
        const app = new Vue({
            el: '#app',
            data: {
                
            }
        })
    </script>
</body>

</html>